James hill



(No Model.)

' J, HILL.

LOOM PATTERN GHAIN.

Patented NOV. 15, 1892. v

XU-fi PATENT OFFICE.

JAMES HILL, OF KEIGHLEY, ENGLAND.

LOOM PATTERN-CHAIN.

SPECIFICATION forming part of Letters Patent No. 486,336, dated November15, 1892. Application filed January 29, 1892. Serial No. 419,699. (Nomodel.) Patented in England July 2 1391; Notlzflsl- To all whom it mayconcern.-

Be it known that I, JAMES HILL, a subject of the Queen of Great Britain,residing at 35 Ethel Street, Keighley,in the county of York, England,have invented a newand useful Improvement in Loom Pattern-Chains, ofwhich the following is aspecification,and for which I have obtainedEnglish Letters Patent, dated July 28, 1891, and numbered 12,781.

My invention relates to improvements in pattern surfaces or chainsformed of pulleys mounted upon bars or pins held together by a series oflinks fitted over each of their extremities, these said pattern-chainsbeing usually employed for controlling and regulating the movements ofthe looms heddles and shuttle boxes through the medium of otherwell-known operating mechanisms.

The object of this invention is to produce metal pattern chains thatshall at all times bear the full complement of parts for producing anymovement (within their ranges) in the heddles or shuttle-boxes withoutnecessitating the detachment or addition to any of their componentparts, so that by having a pattern-chain of the desired length orconsisting of the desired number of links and their accompanying bars orpins and other parts constructed in accordance with this invention anydesired movement may be effected by the adjustment of the parts(hereinafter described) which form the pattern-surface. This object Iattain by the mechanism illustrated in the accompanying sheet ofdrawings, in which- Figures 1 and 2 are side and sectional endelevations, respectively, showing a patternchain in connection with itsbarrel, said chain being made in accordance with my invention. Fig. 3 isa perspective view on an enlarged scale, showing part of a bar or tubeand one link, together with the other improved parts for forming thepattern-surface. Figs.4 and 5 are drawings in detail on the same scaleas Fig. 3, illustrative of the links for the respective ends of the barsor tubes forming the chain. Fig. 6 is a drawing in detail, also on thesame scale as Fig. 3, showing the improved part forming thepattern-surface, as hereinafter described.

Similar letters and figures of reference indicate similar partsthroughout the several views.

The usual and well-known form of pattern- ;barrel, consisting of thesprocket-wheelsa and b, mounted upon a shaft 0, may be made use of inconnection with my improved patternchain.

In place of using the well-known form of pulleys and their spacing-hoopsfor retaining the same in their proper paths of motion to effect thedesired movements of the parts in connection with which they areemployed, as is well understood, I make use of the cams d, which I mountupon the tubesein preference to mounting them upon solid bars or pinswhich, to be of the same strength as these tubes,would also beconsiderably heavier and so add to the weight of the chain, which isundesirable. The cams dare formed by their hubs having projections d andrecesses (1 so that when mountedupon the tubes e they will gear witheach other, whether they are extending upward from the tube e, as arethose marked 1, or downward therefrom, as those marked 2, while by thelinksf and g, having corresponding recesses and proj ections f and g tothose (1 and d on the cams cl into which they are made to couple orgear, said cams d are held in such relative positions on their tubes ewith said links f and 9 that when their pattern-barrel revolves to bringthem into operation those that are arranged to be opera tive are broughtinto a vertical position or made to extend radially from the barrel, asdo those marked 1, and those that are arranged to be inoperative extendinwardly toward the center of said barrel, as do those marked 2. At theopposite ends of the tube e are shown short tubes e and screws h h,which latter are screwed into the ends of said tubes e, as shown in Fig.3, and when their heads are screwed in against the end of the shorttubes 6' they securely fasten the cams in place. It will be noticed thatthe recesses 01 are on exactly-opposite sides of the hub, so that byunscrewing the screws h suificiently the links and hubs may be separatedsufficiently to allow of the position of the cams being changed from theposition shown by the cams 1 in Fig. 3 to the position shown by the cam2 in said figure, so as to be operative or inoperative, as

desired, and this Without actually removing the cams or links from 011?the pins Such being the nature and object of my invention, what I desireto secure by Letters Patent, and claim, is-

1. The combination of the cams d, having projections and recesses cl and(1 with the links f and g, formed with like projections and recesses, asdescribed, to gear with said cams d, and the tubes 6, supporting saidcams and links, substantially as specified.

2. The combination of the cams d, having their hubs formed withprojections and recesses to gear with each other, the links fand g,formed with like projections and recesses to gear with said cams d, thetubes 6, supporting said cams and links, and the bindingscrews h and h,substantially as specified.

3. A series of earns d, havingprojecting perforated hubs, the hub of onecam having projections engaging in radial recesses in the hub of thenext adjacent cam, pins passing through said cams, and means forsecuring the cams and pins together, substantially as described.

4. In a pattern-chain, a series of pins and links, in combination with aseries of cams d, having projecting perforated hubs, the hubs beingprovided with radial recesses and projections on their opposite ends,said recesses being arranged on opposite sides of the hubs to allow ofthe cams being arranged operatively or inoperatively, as required,substantially as described.

5. The combination, with a series of cams and a corresponding series ofpins, of a series of links each having one end rigidly connected to oneset of cams and the other loosely connected to the succeeding set,substantially as described.

JAMES HILL. W'itnesses:

SAMUEL HEY, HARRY ELLISON.

